Lock.



M. WUOLLE.

LOCK. APPLICATION PILBD 1m}. 10, 1910.

99 12 Patented-June 13,1911.

3 BKEBTB-BHIIBT 1.

/7Za275 M22014;

WWW:

M. WUOIiLB.

Patented June 13, 1911.

3 SHEETS-SHBET 2.

3 SHEBTSSHEET 3.

Patented June 13, 1911.

M. WUOLLE.

LOCK.

APPLIOATION FILED AUG. 10, 1910.

flzaiiz' flzwik;

nit).

LOCK.

Specification of Letters Patent.

Patented June 13, 1211.

Application filed August 10, 1910. Serial No. 576,445.

To all whom "it may concern:

Be it known that I, Mn'r'rr VVUoLLn, a citizen of the United States,residing at Calumet, in the county of Houghton and State of Michigan,have invented new and useful Improvements in Locks, of which thefollowing is a specification.

This invention relates to locks and the object of the invention is theprovision of a lock wherein the operation of the knob cylinder willcontrol the latch bolt and under the guidance of the operator willcontrol the action of the night bolt whereby said night bolt may beeither projected or retracted.

A further object of the invention is the provision of means controlledby the knob cylinder for releasing the night bolt and means forretracting the same together with means controlled in the projection andretraction of the night bolt for locking the key bolt in projected orretracted positions.

Further objects of the invention will appear as the following specificdescription is read in connection with the accompanying drawings whichform a part of this application, and in which:

Figure 1 is a side elevation of the lock removed from the door. Fig. 2is an elevation of the same with the top plate of the casing removed.Fig. 3 is a similar elevation with the bottom plate of the casingremoved. Fig. 4 is a section taken on the line 44 of Fig. 2 and showingthe position and operation of the key bolt latch. Fig. 5 is a sectiontaken at right angles to the section of Fig. 4 looking in the directionof the arrow and showing the position of the latch bolt with relation tothe key bolt latch and also the springs for retracting and projectingthese parts. Fig. 6 is a detail perspective View of the night bolt. Fig.7 is a similar view of the latch bolt. Fig. 8 is a similar view of thekey bolt. Fig. 9 is a perspective view of the knob cylinder. Fig. 10 isa sectional view through one side of the knob cylinder. Fig. 11 is asection through the knob and knob cylinder removed from the lock casing.Fig. 12 is a perspective view of the key bolt latch.

Referring more particularly to the drawings 1 represents the casingwhich is apertured as at 2 and 3 to receive the knob and key cylindersrespectively. The forward portion of the casing or the attaching plate4: is apertured as at 5 to receive the night bolt, at 6 to receive thekey bolt and at 7 to receive the passage of the latch bolt. Immediatelybehind the latch bolt opening and secured to the bottom plate of thecasing are upstanding lugs 8 which are provided with oppositelyextending Vshaped projections 9 adapted to enter the V-shaped channel 10formed in the side of the latch bolt 11. This latch bolt is normallyprojected by a spring 12 which is connected to the underside of saidbolt and to a removable brace 13 which extends across the openingbetween the lugs and bears against said lugs 8, preferably wedging intoposition between the lugs and the attaching plate. The rear end of thelatching bolt 11 is provided with a lateral arm 14: which is connectedat different points to opposite sides of the knob cylinder 15 by meansof flexible cords or chains 16 which are adapted to wind upon the drumportion of the cylinder so that a movement of the drum cylinder ineither direction will retract the latching bolt against the tension ofthe spring 12.

Slidably mounted upon the bottom plate between lugs 17 and 18 is thenight bolt 19 which is provided along one face thereof with a pluralityof notches 20 adapted to be engaged by the pawl 21 which is pivoted toone of the side plates of the casing in lugs 22 and has its engaging endprojecting in the path of the notches by a spring 23. The night bolt isprojected by a spring 2% which is under tension at all times when thepawl 21 is in engagement with any one of the notches so that uponrelease of the pawl the bolt will be partially or fully projected.

In order to release the pawl and permit the projection of the night bolt19 by the spring 2 1-, the knob cylinder 15 has slidably mounted thereinupon one side of the knob opening 25 a cam faced arm 26 which operatesin the path'of the contacting end of the pawl 21 when depressed. Thisarm is normally held raised above the top of the contacting end of thepawl 21 and when the knob cylinder is turned is elevated above the pawl.To depress the arm there is a slid.- able rod 27 mounted to slide in theoutside knob 28 alongside of the knob spindle 29 to which the knob issecured. A suitable projection 30 on the rod engages a slot 31 formed ina web 32 bridged across the outer side of the knob and limits theoutward and inward movement of the rod. A suitable shoulder 33 is formedon the end of the rod which engages an overhanging portion 34 on the arm26 which projects in the shank opening 25 of the cylinder 15. Bypressing inwardly upon the rod 27 the arm 26 is moved against thetension of the spring and thereby brought into the path of the pawl 21against which it wipes to carry it out of engagement with the teeth onthe night bolt 19. The opposite side of the knob cylinder is alsoslotted as at 35 and slidably mounted therein against the tension of aspring 36 is a similar cam-faced arm 37 which is adapted to be depressedby a rod 38 slidably mounted on the opposite side of the web 32 andadapted to engage a projection 39 carried upon the rear end of the bolt19. When this arm is depressed the cam face thereof will wipe intoengagement with the projection 39 upon turning the knob cylinder andwill cause the retraction of the bolt 19, the pawl riding idly over theteeth 20. The key bolt is shown at 40 and is provided with a rearwardextension 41 which is slotted at 42 to receive a standard 43 whichguides the rear end of said bolt. Upon one side of the extension 41there is provided a plurality of teeth 44 which are adapted to beengaged by a pawl 45 pivoted upon lugs 46 secured to the upper end ofthe casing. This pawl is normally held projected so as to engage theteeth by a spring 47 so that the bolt 40 is locked in projected orretracted positions until operated by the key which is inserted into thekey cylinder 48. The opposite side of the extension from the teeth. 44is pro vided with notches to receive the key and the key is alsoconstructed so as to engage said notches and the projections formedthereby and also to displace the operating end of the pawl.

Slidably mounted in grooves formed in the lugs 8 beneath the bolt 11 isa latching bar 49 which is adapted to engage notches 51 and 52 formed inthe side of the key bolt 40. This latching bar is normally retracted bya spring 53 and has formed on its rear end a cam face 54 which isengaged by a similar cam face 55 upon the under side of the bolt 19.Upon the projection of the bolt 19 to its full extent the latching barwill be forced into engagement with either of the notches 51 or 52 so asto lock the bolt 40 in retracted or projected positions. If however, thelatch bar 19 is moved outwardly only a partial distance of its extremetravel, the latching bar will not be operated because when the guidebolt is fully retracted the cam surfaces of the bar and bolt do notengage each other. Upon the full projection of the bolt 19, however, thebar will be projected and will engage either of the notches as beforestated. In this connection it may be well to note that the night boltwhen fully projected will prevent the use of the key bolt and whenoperated after the key bolt had been projected will prevent the returnof the key bolt until the night bolt has been partially or fullyretracted. It will therefore be seen that unless a person is familiarwith the condition, and knows that it is necessary to retract the nightbolt, he will be unable to operate the key bolt.

Having thus described the invention, what is claimed is 1. In a look, acasing, a key bolt slidably mounted therein, a night bolt slidablymounted in the casing, means tending to normally project the night bolt,means to prevent the projection of the night bolt, a knob controlledcylinder, manually controlled means actuated in the operation of theknob cylinder for rendering said preventing means inoperative and meansoperated by the night bolt for locking the key bolt in projected orretracted positions.

2. In a lock, a casing, a night bolt slidably mounted in the casing, aknob controlled cylinder and knob carried by the casing, means fornormally projecting the night bolt, means for holding said bolt againstprojection, means carried by the knob and knob cylinder for renderingsaid holding means inoperative and independent means for retracting saidbolt.

3. In a lock, a casing, a spring-pressed latching bolt slidably mountedtherein, a spring-pressed night bolt slidably mounted in the casing, aknob cylinder, an operating connection between the knob cylinder and thelatch bolt, a pawl for holding the night bolt against projection, andmeans carried by the knob cylinder for throwing the pawl out ofengagement with the night bolt.

4. In a lock, a casing, a knob cylinder journaled therein, a knob shankconnected to said cylinder, a spring projected night bolt slidablymounted in the casing, a pawl for holding said night bolt againstprojection, a spring-pressed arm slidably carried by the knob cylinder,means slidably mounted upon the knob shank for operating said arm tobring it in the path of the pawl and thereby disengage the same from thenight bolt, a second spring-pressed arm, and means slidably mounted uponthe shankadapted to throw said second arm into the path of a part of thenight bolt whereby the same may be retracted against the tension of thespring.

5. In a look, a casing, a notched key bolt slidably mounted therein, aspring-pressed night bolt slidably mounted therein, means to hold thenight bolt against projection,

means to operate the key bolt, means to release the night bolt, andmeans operated in the projection of the night bolt to engage the keybolt to lock the same against movement.

6. In a lock a casing a spring pressed latching bolt slidably mountedtherein, a spring pressed night bolt also slidably mounted therein aknob cylinder, an operating connection between the knob cylinder ofretracting the latch bolt for throwing the pawl out of engagement withthe night bolt. 10

In testimony whereof I afiix my signature in presence of two witnesses.

MATTI WVUOLLE.

and the night bolt, a pawl for holding the l/Vitnesses: night boltagainst projection, and means THEODORE B. CATLIN, controlled by theoperator in the operation A. WEST.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

